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exploit · Wed 02 Sep 2026 · 19:11 UTC

Actively exploited

[KEV] CVE-2026-59822: BerriAI LiteLLM Improper Authentication Vulnerability

Filed UTCSource NVD ↗

BerriAI LiteLLM contains an improper authentication vulnerability in the MCP Streamable HTTP endpoint that could allow an unauthenticated attacker to establish an authenticated MCP session using an arbitrary Bearer token.

Signals

as the pipeline stamped them
KEV
Active exploitation (KEV)
What to do
  1. On CISA KEV — actively exploited. Patch immediately.

CISA KEV means this flaw has been seen exploited in real attacks — not predicted, observed. Treat it as urgent regardless of its score.

CVE

KEV from CISA · EPSS from FIRST
CVE ids in this dispatch with their KEV status and EPSS score
IdKEVEPSSReference
CVE-2026-59822KEV0.84%NVD ↗

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